Last Reunion Before Darkness

This is a short story, a tale about the world that is about to end. Aki and his class have one last time they can share their fears, happiness, misery..... They arrange a big party at school, no more class curses, teachers annoying the kids, just fun at school with hopes and desires to fulfill their dreams on last time before they have to say goodbye to their lives. But things get more weird and stranger by the days Is it really a War? Or is there something else going on too?